Which food has less impact on blood sugar?

ENGLISH MUFFIN (ENRICHED BLEACHED WHEAT FLOUR [WHEAT FLOUR, MALTED BARLEY FLOUR, NIACIN, REDUCED IRON, THIAMINE MONONITRATE, RIBOFLAVIN, FOLIC ACID], WATER, YEAST, 2% OR LESS OF: SUGAR, DATEM, CITRIC ACID, ASCORBIC ACID, DEGERMED YELLOW CORN MEAL, FUMARIC ACID, CALCIUM PROPIONATE AND POTASSIUM SORBATE [PRESERVATIVES], SALT, SOYBEAN OIL, VINEGAR, WHEAT GLUTEN, DEGERMED YELLOW CORN FLOUR), COOKED VEGETABLE EGG WHITE PATTY (EGG WHITES, ROMA TOMATOES [TOMATO, CALCIUM CHLORIDE], SPINACH, MONTEREY JACK CHEESE [PASTEURIZED MILK, CHEESE CULTURE, SALT, ENZYMES, NATAMYCIN {MOLD INHIBITOR}], FULL MOISTURE PARMESAN CHEESE [PASTEURIZED PART-SKIM MILK, CHEESE CULTURE, SALT, ENZYMES], 2% OR LESS OF MODIFIED FOOD STARCH, XANTHAN GUM, BASIL FLAVOR [SOYBEAN OIL, LECITHIN, NATURAL FLAVOR, CANOLA OIL, MONO-AND DIGLYCERIDES, SOY LECITHIN, EDTA]), AMERICAN CHEESE (REDUCED FAT AMERICAN CHEESE [SKIM MILK, MILK, SALT, CHEESE CULTURES, ENZYMES], DAIRY PRODUCT SOLIDS*, NONFAT DRY MILK*, SODIUM CITRATE, SALT, SODIUM PHOSPHATE, SORBIC ACID [PRESERVATIVE], COLOR ADDED, SOY LECITHIN, *INGREDIENTS NOT IN REGULAR AMERICAN CHEESE).